巻号一覧
27 巻, 2 号
選択された号の論文の55件中51～55を表示しています
-
植田 精一, 大橋 義弘, 鈴木 駿, 米倉 豊治, 内田 敏1959 年 27 巻 2 号 p. 309-311
発行日: 1959/01/01
公開日: 2008/02/14
ジャーナル フリーTo improve the quality of table-use sweet potetoes, the author carried out the study regarding the quality which has become important in the marketing. The results regarding Norin No. 1 were as follows: 1) No correlation between yield and quality was recognized. 2) Some correlations between the quality and leaf-color in the field were observed; accordingly, the color of the leaves gives a key to grade the quality of the sweet potatoes. 3) Furthermore, the skin-color has some correlation with quality, therefore the skin-color is helpful to judge the quality. This may be applied for the agricultural products inspection. 4) Many charactars constituting the quality had correlation, respectively, however, no correlation was found between the kind of soils and the quality. In Kokei No. 14, earliest variety, any correlations was not found among the items consisting the quality, but in this variety, numbers of sweet potatoes floated on the water, because they were lighter than the water.抄録全体を表示PDF形式でダウンロード (553K) -
大泉 久一, 御子柴 晴夫1959 年 27 巻 2 号 p. 312-314
発行日: 1959/01/01
公開日: 2008/02/14
ジャーナル フリーWe examined the difference in the growth process of soybean plants sown between rows of wheat plants and sown in the naked land. 1) Soybean plants growing between rows of wheat are more or less hygrophytic type, but after the harvest of wheat the growth becomes temporary slow and afterwards they grow well. In the late stage, the plants are in the better condition than the ones sowned in the naked land. 2) The most important stage in the growth of soybean plants sown between rows of wheat is before and after the harvest of wheat. Especially carbohydrate content of the plants was markedly increased. 3) The increase of carbohydrate content in this stage is due to the higher ability of the carbon assimilation and to the less consumption of carbohydrate in the nitrogen metabolism and dry matter production. 4) Growth and yield of soybean plants sown between rows of wheat is possibly influenced to greater extent by condition, especially intensity of radiation at the time of before and after the harvest of wheat.抄録全体を表示PDF形式でダウンロード (621K) -
浦野 啓司, 長瀬 嘉迪, 小口 忠彦1959 年 27 巻 2 号 p. 315-318
発行日: 1959/01/01
公開日: 2008/02/14
ジャーナル フリーThe differences of Chemical composition of soybean as affected by various soil moisture contents were investigated by pot culture, in 1956 and 1957. The results many be summarized as follows: 1) In DW (plots subjected to wet condition after dry condition), wet condition of soil (75 % of maximum water capacity) in seedling period retarted the accumulation of nitrogen and carbohydrates in the late stage of growth and decreased yield of grain. In WD (plots subjected to dry condition after wet condition), yield of grain were not affected by wet condition. 2) Wet condition of soil (in DW and WD) in the previous period of flowering does not affected the yields of grain remarkably. 3) In DW and WD, wet condition of soil in the flowering period increased the accumulation of nitrogen, carbohydrates and yield of grain strikingly. Especially in DW, translocation from vegetative organs to grain was presumably smooth. 4) In DW, wet condition of soil in the fruiting period decreased the amounts of carbohydrates in vegetative organs and increased the amounts of fat and yield of grain. In WD, yields of grain were not affected by wet condition. 5) Generally, in the case of DW the percentage of nitrogen content of grain increased more rapidly than WD, On the contrary, in the case of WD the increase of parcentage of fat content of grain took place very strikingly. In this study, the effect of deficient soil moisture content (45 % of marimum water capacity) are contrary to the effect of abundant soil moisture content and the results in the former was abbreviated.抄録全体を表示PDF形式でダウンロード (644K) -
反田 嘉博1959 年 27 巻 2 号 p. 319-320
発行日: 1959/01/01
公開日: 2008/02/14
ジャーナル フリー1) Azuki seeds were grouped into normal, small, malformed, corrupt, destroyed (due to injury of insects and crushed), wrinkled, unripe, and abostive grains. 2) The following characters such as specific gravity, weight, length, width, and thickness of the grains, and the correlations among them were investigated in order to establich the standard suitable for eliminating trash grain of Azuki seeds (Fig. I∼III. Table I). 3) Almost all of the corrupt grains and all of the unripe grains, also about harlf of the malformed grains and wrinkled grains were selected by the upperlimits of specific gravity of the unriped grains. About harlf of the destroyed grains and all of the small grains were selected by the upperlimits of weight of the small grains. In such way, the greater part of trash grains might be removed practically. 4) The Japanies Tomi (Winnowing fan) is best of all the farm tools for the selections of the Azuki seeds, and the most suitable wind velocity at the third exhaust (exhaust of the immature grain and dust) is 6.3 m/sec (Table II).抄録全体を表示PDF形式でダウンロード (429K) -
升尾 洋一郎1959 年 27 巻 2 号 p. 321-323
発行日: 1959/01/01
公開日: 2008/02/14
ジャーナル フリーFiber flax belongs to self-pollinating plant, but in the flowering period flowers are usually visited by many kind of insects such as honey bees, Bombus spp., Megachile spp., hover flies, butterflies, etc. The investigation was carried out from 1954 to 1957 to know how many extent viable foreign pollen will be brought and how many natural crossing will occur. Blue- and white- flowering varieties were planted in concrete frame located in the field of the Hokkaido National Agricultural Experiment Station. The flax flowers expected to open at next morning were castrated, and then a group was uncaged to expose insect visit, the second group was artificially pollinated next morning and the third was caged soon after the castration with ordinary fly screen. Natural crossing were estimated by number of blue flowered F1 plants in white flower variety planted alternately with dominant blue flower variety in 3 cm×3 cm. The results are summarized as follows : 1) In uncaged plot, 34.3 % and 31.7 % of castrated flowers grew capsule in blue- and white- flower variety respectively. If there were no injury caused by castration, more capsule will grow. By following formula the possibility of capsule setting was estimated as 45.2 % and 41.0 % respectively. Possibility of capsule setting=(No. of capsules in uncaged plot)/(No. of castrated flowers in uncaged plot×(No. of capsules in artificially pollinated plot)/(No. of castrated flowers in artificially pollinated plot)) 2) In caged plot, 9.0 % and 3.8 % of castrated flowers grew capsule. The capsule setting in caged plot was very fewer than in uncaged plot. These results show pollens which fertilize the castrated flower are mainly brought by insects. 3) Daily capsule setting of castrated flower was very variable, 3.8 %-77.5 %. The flowers which opened under low temperature about 18°C, grew a few capsule by few insect visit. 4) Natural crossing were 27.94 %, 5.38 % and 1.62 % at original mother plants, capsules and progeny seeds basis. Crossed capsules had 1.3 croseed seeds of 4.4 grown seeds in average. In conclusion, to flax flower many foreign pollens are supplied, by insects, but natural crossing are relatively low because the flower is pollinated preferentially by her own pollen.抄録全体を表示PDF形式でダウンロード (534K)